东北林业大学学报
東北林業大學學報
동북임업대학학보
JOURNAL OF NORTHEAST FORESTRY UNIVERSITY
2015年
7期
88-91
,共4页
翟凯燕%陈信力%马婷瑶%关庆伟
翟凱燕%陳信力%馬婷瑤%關慶偉
적개연%진신력%마정요%관경위
杉木人工林%间伐强度%土壤多酚氧化酶活性%季节变化%土壤理化性质
杉木人工林%間伐彊度%土壤多酚氧化酶活性%季節變化%土壤理化性質
삼목인공림%간벌강도%토양다분양화매활성%계절변화%토양이화성질
Chinese fir plantation%Thinning intensity%Soil polyphenol oxidase activity%Seasonal variation%Soil physical and chemical properties
以南京市溧水区林场间伐6 a后的25年生杉木人工林为对象，测定了弱度（30％）、中度（50％）、强度（70％）间伐及对照样地的土壤多酚氧化酶活性。结果表明：与对照相比，弱度间伐在秋季和冬季提高了土壤多酚氧化酶的活性，3种间伐强度在春季和夏季降低了多酚氧化酶活性；春夏季节土壤多酚氧化酶活性高，秋冬季节活性低，且前者与后者差异性显著（ p＜0．05）；土壤多酚氧化酶活性与土壤温度，全磷、全氮质量分数均呈极显著正相关（p＜00．1），与土壤含水量呈显著正相关（ p＜00．5），与碳氮比呈显著负相关（ p＜00．5），与土壤总有机碳质量分数、pH值相关性不显著。
以南京市溧水區林場間伐6 a後的25年生杉木人工林為對象，測定瞭弱度（30％）、中度（50％）、彊度（70％）間伐及對照樣地的土壤多酚氧化酶活性。結果錶明：與對照相比，弱度間伐在鞦季和鼕季提高瞭土壤多酚氧化酶的活性，3種間伐彊度在春季和夏季降低瞭多酚氧化酶活性；春夏季節土壤多酚氧化酶活性高，鞦鼕季節活性低，且前者與後者差異性顯著（ p＜0．05）；土壤多酚氧化酶活性與土壤溫度，全燐、全氮質量分數均呈極顯著正相關（p＜00．1），與土壤含水量呈顯著正相關（ p＜00．5），與碳氮比呈顯著負相關（ p＜00．5），與土壤總有機碳質量分數、pH值相關性不顯著。
이남경시률수구림장간벌6 a후적25년생삼목인공림위대상，측정료약도（30％）、중도（50％）、강도（70％）간벌급대조양지적토양다분양화매활성。결과표명：여대조상비，약도간벌재추계화동계제고료토양다분양화매적활성，3충간벌강도재춘계화하계강저료다분양화매활성；춘하계절토양다분양화매활성고，추동계절활성저，차전자여후자차이성현저（ p＜0．05）；토양다분양화매활성여토양온도，전린、전담질량분수균정겁현저정상관（p＜00．1），여토양함수량정현저정상관（ p＜00．5），여탄담비정현저부상관（ p＜00．5），여토양총유궤탄질량분수、pH치상관성불현저。
We studied the effects of thinning on soil polyphenol oxidase ( PPO) activity in a 25-year-old Chinese fir plantation which was thinned by light ( 30%) , moderate ( 50%) and high ( 70%) intensity in Nanjing Lishui Forest Farm.Compared with the control (0%), light-intensity thinning( LIT) treatment increased the activity of PPO in autumn and winter, whereas, three thinning intensity treatments decreased the activity of PPO in spring and summer.Soil PPO activity was higher in the spring and summer than that in the autumn and winter.There was significant difference between the former and latter.In addition,the activity of soil PPO was significantly positively correlated with soil temperature , soil total nitro-gen, soil total phosphorus and soil water content and negatively correlated with C/N ratio.However , there was no signifi-cant correlation between soil PPO, soil total organic and pH.
